The Dreyfus Affair splits the Third Republic
A wrongful treason conviction exposes deep antisemitism in the French army
Quick facts
- Location
- Paris and Devil's Island, French Guiana
- Key people
- Alfred Dreyfus, Emile Zola
- Outcome
- Full exoneration, 1906
What happened
Captain Alfred Dreyfus, a Jewish artillery officer in the French army, was wrongfully convicted of treason in 1894 after a memorandum found in a wastebasket suggested a spy was passing military secrets to the German attache. Suspicion fell on Dreyfus largely because he was Jewish, and he was sentenced to life imprisonment on Devil's Island in French Guiana despite thin evidence, while the actual culprit, another officer, was later identified and covered up by the army. The case split France for over a decade between Dreyfusards, who demanded a retrial, including the novelist Emile Zola, who published the open letter J'accuse in 1898, and anti-Dreyfusards who defended the army's honor; Dreyfus was finally fully exonerated in 1906.
Why it matters
The affair exposed how deeply antisemitism and distrust of the army's authority had divided French society and politics, and the public reaction against the Catholic Church's role in supporting Dreyfus's conviction directly fed the 1905 law formally separating church and state in France.
How we know
Trial records, Zola's published J'accuse letter, and the eventual military and civilian inquiries that led to Dreyfus's 1906 exoneration all survive as documented evidence of both the wrongful conviction and its reversal.
Sources
- World History Encyclopedia. The Dreyfus Affair & the Separation of Church and State in France · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- Holocaust Encyclopedia, United States Holocaust Memorial Museum. Alfred Dreyfus and the "Dreyfus Affair" · Reputable sourceencyclopedia.ushmm.org · The domain "encyclopedia.ushmm.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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